Onehunch
Prices abroad, in your head.
You are at a till in Budapest, the tag says 4 890 Ft and there is a queue behind you. Onehunch is for that moment — or rather for the evening before it. It finds the shortest sum you can do in your head for today's rate and tells you how far off that sum runs. After that the phone can stay in your pocket.
Coming to the App StoreToday's head rule
- Drop two zeros
- Divide by 4
- Add a tenth
For people who cross a border with their wallet
A Swede in Spain, a German in Denmark or Hungary, a Romanian working in Germany, an Australian anywhere in Europe. A calculator answers one sum and forgets it. A rule answers every price on the trip, and you learn it once. Onehunch keeps the rule steady while the rate wobbles and speaks up only when the rule has drifted too far to trust.
What is inside
A rule you can say out loud
One to three spoken steps, picked for today's reference rate. Choose simpler or closer; the error is always written next to it.
The tag taken apart
Type a price and watch it go through the rule step by step, ending beside the sum to the cent. That is how the rule sticks.
Is that dear?
Write down what a coffee or a lunch costs you at home. A foreign price is read back in those yardsticks.
Cheaper · like home · dearer
Ten tags, no clock
Practice rounds with shop-like prices. Work each one out in your head, then see which landed.
Units too
Head rules for miles, pounds, gallons, inches, feet and Fahrenheit, found the same way.
Works with no signal
Kept rules need no network. Rates are fetched at most twice a day, and a set ships inside the app.
What it is not
- Not a bank and not a bureau: no transfers, no payments, no fees, no cards.
- No charts, no rate alerts, no opinion on when to buy currency.
- Rough sums for the till, not exact amounts. The exact figure is shown small, so you can check yourself.
Your data
- No account, no ads, no analytics, no tracking.
- Rules, home prices and practice rounds stay on your iPhone.
- It fetches a public table of reference rates and, once per launch, asks our server whether the version is current, using an anonymous device identifier. Nothing you type is sent.